Final Drive - Pinion Oil Seal

FINAL DRIVE UNIT PINION OIL SEAL

RENEW
- Raise the vehicle on a ramp.



- Remove the propshaft to drive flange securing bolts (Fig 1).
- Reposition the prop shaft for access.
- Using a torque wrench, measure the torque required to turn the pinion through the backlash.
- Ensure that the pinion is reset before each measurement.
- Mark the flange securing nut to pinion shaft.
- Remove the pinion flange securing nut and place a two leg puller to the front.
- Undo the tool centre bolt and fit and align the puller to the pinion flange.
- Tighten the tool centre bolt to the extract flange.
- Place the puller aside and using suitable seal remover tool, displace and remove the pinion seal.
- Clean flange and casing seal faces.



- Fit and align the new seal to Service Tool 18G 1 428A (Fig 2).
- Fit and fully seat the seal to the casing and place tool aside.
- Lubricate the pinion seal and fit and fully seat the drive flange to the pinion/seal.
- Fit and tighten the drive flange securing nut to mark.
- Using a suitable torque wrench check pinion pre-load (35-55 lbs inch).
- Reposition the propshaft to the drive flange.
- Fit and tighten the securing nuts/bolts.
- Undo and remove the final drive oil filler plug then clean the plug.
- Check and top up the oil level.
- Fit and tighten the filler plug.
- Lower the ramp.

SERVICE TOOLS
18G 1428A Oil seal installer

TORQUE FIGURES
Propeller shaft to drive flange 95 - 105 Nm
Wheel nut to wheel stud (STEEL WHEEL) 65 - 85 Nm
Wheel nut to wheel stud (ALLOY WHEEL) 88 - 102 Nm

SPANNER SIZES
29 mm

9/16AF